[1]
I. Boev, G. Tasev, D. Serafimovski, and B. Boev, “VOLCANIC ACTIVITY IN THE KOŽUF MOUNTAIN AREA AND IMPLICATIONS FOR THE DISTRIBUTION OF RARE EARTH ELEMENTS IN DIATOMITE AND TRIDYMITE”, GeolMac, vol. 33, no. 1, pp. 5-24, Jun. 2019.